(a) State Ohm's Law. (b) Name and define the physical quantity determined by the slope of curve given in the diagram. Use this graph to find the value of this physical quantity in SI units. (c) Establish the relationship between 1 kWh and 1 joule.
(a) State Ohm's Law. (b) Name and define the physical quantity determined by the slope of curve given in the diagram. Use this graph to find the value of this physical quantity in SI units. (c) Establish the relationship between 1 kWh and 1 joule.
Official answer
The slope of the V-I curve represents the resistance of the circuit. The resistance is calculated as the ratio of voltage to current. Using the graph, we can find the value of resistance by dividing the voltage by the current at any point on the curve. For example, at a voltage of 6 V and a current of 2 A, the resistance would be 6 V / 2 A = 3 ohms.
Marking scheme
- 1.The slope of the V-I curve represents the resistance of the circuit.
- 2.The resistance is calculated as the ratio of voltage to current.
- 3.Using the graph, we can find the value of resistance by dividing the voltage by the current at any point on the curve.
Hint
The slope of the V-I curve represents the resistance of the circuit. The resistance is calculated as the ratio of voltage to current. Using the graph, we can find the value of resistance by dividing the voltage by the current at any point on the curve.
Quick oral answer
The slope of the V-I curve represents the resistance of the circuit. The resistance is calculated as the ratio of voltage to current. Using the graph, we can find the value of resistance by dividing the voltage by the current at any point on the curve.
Common mistakes
- 1.Confusing the slope of the V-I curve with the resistance of the circuit.
- 2.Not using the correct units for voltage and current when calculating resistance.
Analysis and explanation
The slope of the V-I curve represents the resistance of the circuit. The resistance is calculated as the ratio of voltage to current. Using the graph, we can find the value of resistance by dividing the voltage by the current at any point on the curve. For example, at a voltage of 6 V and a current of 2 A, the resistance would be 6 V / 2 A = 3 ohms.
Interesting facts
The slope of the V-I curve is a fundamental concept in electronics and is used to determine the resistance of a circuit.
The resistance of a circuit can be calculated using Ohm's Law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.
Question details
Q36 of 39 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2023
- Section
- Section D
- Marks
- 5
- Type
- Long Answer
- Chapter
- Chemical Reactions and Equations
- Topic
- Chemical Reactions and Equations
- Bloom's level
- Analysis
- Syllabus topic
- Chemical Reactions and Equations
Spotted a mistake or something unclear?
Tell us and we will fix it.
Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2023?
This question carries 5 marks in the CBSE Class 10 Science 2023 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Chemical Reactions and Equations" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2023 paper?
This is a Long Answer question from Section D in the CBSE Class 10 Science 2023 paper.